【判断题】在足球比赛中,防守是化解对方进攻的手段。
【单选题】People ought to take physical examinations at regular intervals so as to know their own health.
A.
人们必须在一段时间内进行体检,以了解自己的身体情况。
B.
人们应当按规定进行体检,以确保自己的身体健康。
C.
人们应当进行体育锻炼,以确保自己的身体健康。
【简答题】Many people find that regular physical activity gives them an unexpected benefit.They sleep better and wake up feeling more__61 ,in part due to increased amounts of deep sleep. Deep sleep may play a r...
【判断题】米氏常数测定实验中,需要先做出底物浓度的标准曲线,再做双倒数方程。
【判断题】He goes to school by bus. Does he goes to school by bus?
【单选题】利用霍尔元件不能制造的传感器是______。
【单选题】What is the writer's main purpose in the article?
A.
To recommend regular physical exercise.
B.
To describe the dreadful nature of the backache.
C.
To suggest that back problems can be remedied.
D.
To explain the widespread occurrence of back pain.